Originally Posted by Katczinsky

This is correct. A mere majority doesn't connote complete control.

But there are also a lot of other things they could do that is within their power; such as refuse to pass a war spending bill that does not contain withdraw conditions. If the Republicans do not refrain from blocking all of the war spending legislation...then the war will not be funded. Either way the war would be ended.

I believe this is the lack of spine and unity within the Democratic Party that tadpole was suggesting.